Well completion tool shear pin shear test tool

Abstract

The utility model discloses a well completion tool shear pin shear test tool which comprises a U-shaped frame, a telescopic hydraulic cylinder, a shear pin seat, a shear pin sleeve, four guide rods, a pressing block, a pressure sensor and bolts, a cylinder body of the telescopic hydraulic cylinder is fixedly installed at the right end of the U-shaped frame, and the four guide rods are fixedly installed on the upper portion and the lower portion of the U-shaped frame. A disc is fixedly arranged at the right end of the shear pin sleeve, the disc at the right end of the shear pin sleeve is installed on the guide rod in a sliding mode, and the shear pin base is fixedly installed at the left end of the U-shaped frame. The test tool can carry out a pressure maintaining test on the gravity shear force borne by the shear pins in actual use and the shear force generated when the four shear pins are cut off, so that the shear pins capable of meeting the actual use requirement can be selected, and the shear pins can be selected by arranging the moving gap between the flange at the left end of the pressing block and the disc at the right end of the shear pin sleeve. The pressure sensor is convenient to install and fix, and the accuracy of the test value of the pressure sensor can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of petroleum completion tools, in particular to a shear nail shearing test tool for completion tools. Background Art

[0002] Completion tools are essential operating and production-increasing equipment in the process of oil and gas extraction. When the rubber cylinder assembly and pressure-bearing short joint of the completion tool are installed in the cylinder, they need to be fixed with shear nails to avoid premature movement and displacement of the rubber cylinder assembly and the pressure-bearing short joint. When choosing different types of shear nails, it is necessary to conduct a pre-shear test on the shear nails to meet actual use requirements. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a tool capable of performing shear tests on shear nails of various sizes and types to meet actual use requirements.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: a completion tool shear nail shear test tool, including a U-shaped frame, a telescopic hydraulic cylinder, a shear nail seat, a shear nail sleeve, a guide rod, a pressure block, a pressure sensor and a bolt, the cylinder body of the telescopic hydraulic cylinder is fixedly installed on the right end of the U-shaped frame, and four guide rods are fixedly installed on the upper and lower parts of the U-shaped frame. A disc is fixedly provided on the right end of the shear nail sleeve, and the disc at the right end of the shear nail sleeve is slidably installed on the guide rod. The shear nail seat is fixedly installed on the left end of the U-shaped frame, and the left end of the shear nail sleeve is slidably installed in the shear nail seat. A test hole is provided on the shear nail seat, the right end of the pressure block is fixedly connected to the piston rod of the telescopic hydraulic cylinder, the left end flange of the pressure block is connected to the right end disc of the shear nail sleeve by bolts, and there is a moving gap of 1-2 cm between the left end flange of the pressure block and the right end disc of the shear nail sleeve, and the pressure sensor is fixedly installed at the center position of the pressure block, and the test head of the pressure sensor can press on the right end disc of the shear nail sleeve.

[0005] Preferably, the test holes are arranged in a circular array on the shear nail seat in 2-10 circles, and the number of test holes in each circle is set to 4-10.

[0006] Preferably, it also includes a rubber cam and a shaft sleeve, wherein the shaft sleeve is fixedly installed in the center of the base circle of the rubber cam, and the shaft sleeve is slidably installed on the guide rod.

[0007] Preferably, 3-6 tool holes are arranged on the sleeve in a circular array.

[0008] Preferably, a material taking hole connected to the shear nail seat is provided at the left end of the U-shaped frame.

[0009] Compared with the prior art, the advantages of the utility model are: this test fixture can carry out a pressure-maintaining test on the gravity shear force that the shear nails are actually subjected to in use, as well as a test on the shear force when four shear nails are cut, so as to select shear nails that can meet the actual use requirements. By setting a moving gap between the flange at the left end of the pressure block and the disk at the right end of the shear nail sleeve, it is convenient to install and fix the pressure sensor, and at the same time can improve the accuracy of the pressure sensor test value. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model is further described below in conjunction with the accompanying drawings.

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] Figure 2 It is a structural schematic diagram of a shear nail seat. DETAILED DESCRIPTION

[0013] The utility model is described in detail below in conjunction with specific implementation methods:

[0014] like Figure 1 and Figure 2 The shear nail shear test fixture of a completion tool shown in the figure comprises a U-shaped frame 1, a telescopic hydraulic cylinder 2, a shear nail seat 3, a shear nail sleeve 4, a guide rod 5, a pressure block 6, a pressure sensor 61 and a bolt 62. The cylinder body of the telescopic hydraulic cylinder 2 is fixedly mounted on the right end of the U-shaped frame 1, four guide rods 5 are fixedly mounted on the upper and lower parts of the U-shaped frame 1, and the four guide rods 5 are arranged in a rectangular distribution in the front and back and up and down. A disc is fixedly arranged on the right end of the shear nail sleeve 4, and the disc on the right end of the shear nail sleeve 4 is slidably mounted on the guide rod 5. The shear nail seat 3 is fixedly mounted on the left end of the U-shaped frame 1, and the left end of the shear nail sleeve 4 is slidably mounted in the shear nail seat 3. A test hole 31 is provided on the shear nail seat 3, the right end of the pressure block 6 is fixedly connected to the piston rod of the telescopic hydraulic cylinder 2, the left end flange of the pressure block 6 is connected to the right end disk of the shear nail sleeve 4 by a bolt 62, and there is a 1.5 cm moving gap between the left end flange of the pressure block 6 and the right end disk of the shear nail sleeve 4 to facilitate the operation of the pressure sensor 61, the pressure sensor 61 is fixedly installed at the center position of the pressure block 6, and the test head of the pressure sensor 61 can be pressed on the right end disk of the shear nail sleeve 4, and also includes a control module and a display, and the pressure sensor 61 and the display are respectively connected to the control module through circuits.

[0015] The test holes 31 are arranged in four circles in a circular array on the shear pin seat 3. The apertures of the test holes 31 in each circle are set to different sizes to meet the shear test requirements for shear pins of different diameters. The number of test holes 31 in each circle is set to four to correspond to the number of shear pins actually used on the pressure-bearing nipple and separator of the completion tool.

[0016] It also includes a rubber cam 7 and a sleeve 71. The sleeve 71 is fixedly installed in the center of the base circle of the rubber cam 7. The sleeve 71 is slidably installed on the guide rod 5. The combination of the four rubber cams 7 and the sleeve 71 that rotate forward and backward and up and down can press and fix the shear nails 10 placed in the test hole 31 to prevent the shear nails 10 from flying out after being cut off from the test hole 31, thereby improving the safety of the test process.

[0017] The shaft sleeve 71 is provided with four tool holes in a circular array, and a rod-shaped tool is inserted and installed in the tool holes to facilitate the rotation operation of the shaft sleeve 71.

[0018] The left end of the U-shaped frame 1 is provided with a material taking hole 11 connected to the shear nail seat 3, and the sheared shear nails can be taken out manually through the material taking hole 11 or sucked out by a magnetic rod.

[0019] Take four shear nails 10 and insert them into the test hole of the shear nail seat 3. The piston rod of the telescopic hydraulic cylinder 2 extends to push the pressure block 6 to move leftward to conduct the first limit shear nail limit performance test. The pressure sensor 61 pushes the shear nail sleeve 4 to move leftward until the pressure sensor 61 reaches the preset pressure value. This preset pressure value is the same as the maximum value of the gravity shear value that the shear nail bears in actual use. The tester can judge whether the shear nail 10 is cut by observing the value output by the pressure sensor 61, and perform a 10-minute pressure test. Start the telescopic hydraulic cylinder 2 again to increase the pressure applied to the pressure sensor 61 until the pressure sensor 61 reaches the preset pressure value. This preset pressure value is the same as the average impact force value of the displacement tool. The tester can judge whether the shear nail 10 is cut by observing the value output by the pressure sensor 61. When the piston rod of the telescopic hydraulic cylinder 2 retracts, the shear nail seat 3 can be driven to move rightward through the bolt 62. At this time, the moving gap between the left end flange of the pressure block 6 and the right end disc of the shear nail sleeve 4 is opened, preparing for the next test of the pressure sensor 61.

Claims

1. A shear test tool for completion tools, characterized by: The invention comprises a U-shaped frame (1), a telescopic hydraulic cylinder (2), a shear nail seat (3), a shear nail sleeve (4), a guide rod (5), a pressure block (6), a pressure sensor (61) and a bolt (62), wherein the cylinder body of the telescopic hydraulic cylinder (2) is fixedly mounted on the right end of the U-shaped frame (1), four guide rods (5) are fixedly mounted on the upper and lower parts of the U-shaped frame (1), a disc is fixedly arranged on the right end of the shear nail sleeve (4), the disc on the right end of the shear nail sleeve (4) is slidably mounted on the guide rod (5), the shear nail seat (3) is fixedly mounted on the left end of the U-shaped frame (1), and the left end of the shear nail sleeve (4) is fixedly mounted on the guide rod (5). The end is slidably mounted in the shear nail seat (3), and the shear nail seat (3) is provided with a test hole (31). The right end of the pressure block (6) is fixedly connected to the piston rod of the telescopic hydraulic cylinder (2), and the left end flange of the pressure block (6) is connected to the right end disk of the shear nail sleeve (4) through a bolt (62). There is a movement gap of 1-2 cm between the left end flange of the pressure block (6) and the right end disk of the shear nail sleeve (4). The pressure sensor (61) is fixedly mounted at the center position of the pressure block (6), and the test head of the pressure sensor (61) can press on the right end disk of the shear nail sleeve (4).

2. The completion tool shear nail shear test tool according to claim 1, characterized in that: The test holes (31) are arranged in a circular array on the shear nail seat (3) in 2-10 circles, and the number of the test holes (31) in each circle is set to 4-10.

3. The completion tool shear nail shear test tool according to claim 1, characterized in that: It also comprises a rubber cam (7) and a shaft sleeve (71), wherein the shaft sleeve (71) is fixedly mounted in the center of the base circle of the rubber cam (7), and the shaft sleeve (71) is slidably mounted on the guide rod (5).

4. The completion tool shear nail shear test tool according to claim 3, characterized in that: The shaft sleeve (71) is provided with 3 to 6 tool holes in an annular array.

5. The completion tool shear nail shear test tool according to claim 1, characterized in that: The left end of the U-shaped frame (1) is provided with a material taking hole (11) which is connected to the shear nail seat (3).

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